The pufferfish caught in a net in this fascinating YouTube clip gives a perfect demonstration of how they 'puff' their bodies up. One moment it looks like a regular fish, and the next it resembles a ...

Following is a transcript of the video. Narrator: If there's one thing you know about puffer fish, it's that they can do this. When aggravated by a predator, they, you know, puff up. Some puffers, ...

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